CN1235363A - Hydraulic operating device - Google Patents
Hydraulic operating device Download PDFInfo
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- CN1235363A CN1235363A CN 99100683 CN99100683A CN1235363A CN 1235363 A CN1235363 A CN 1235363A CN 99100683 CN99100683 CN 99100683 CN 99100683 A CN99100683 A CN 99100683A CN 1235363 A CN1235363 A CN 1235363A
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Abstract
The invention provides a hydraulic operation device that has a small, simple structure and is excellent in operational reliability and durability. A switching part of a breaker is composed of a fixed electrode and a movable electrode. A hydraulic operation device is composed of a driving part, a hydraulic control part, an accumulator, a pump unit and the like. The driving part is equipped with a driving cylinder, a driving piston and a driving rod, and a first and second liquid chambers are formed at both sides of the driving piston in the driving cylinder. A damper part and a damper chamber for the purpose of damping at the end of opening operation are formed in the second liquid chamber. The damper chamber is located at an end position in the driving cylinder which is a position away from a sealing part around the driving piston. A projecting part having a diameter less than that of the damper part is formed on the tip surface of the damper part.
Description
The present invention relates to apply device, this apply device uses as the drive source of open circuit that carries out circuit breaker and closed circuit action.
In recent years, along with the increase of electricity needs, the high capacity of transmission system and ultra high voltageization etc. have been realized.For this reason, the performance raising that is located at the circuit breaker in the transmission system is outstanding apparent important, and the requirement that improves for performance is also big.Recently, with SF
6The gas-break switch of gas-insulated mode is a main flow, as its drive source, the gas-break switch of fluids such as utilizing gas or liquid is arranged.
Wherein, utilize in the gas-break switch of gas (compressed air), along with the high capacity and the superhigh pressureization of transmission system, actuating force enlarges markedly, and the equipment of air cylinder pressure and watertight aircase etc. also maximizes.In addition, the supply and exhaust sound during operation strengthens, and needs silencing means.
Utilize the apply device of liquid, and utilize comparing of air, its high pressure, high-power are easy, so, can realize miniaturization.In addition, the noise in the time of also can significantly alleviating operation, simultaneously, because its responsiveness of incompressibility of liquid is good.Therefore, as the drive source of circuit breaker, wish to improve more the performance of this apply device.
Figure 11 represents as one of the existing apply device of the drive source use of this circuit breaker example.Among this Figure 11, circuit breaker switching portion 1, fixed electrode 2 for example and movable electrode 3 constitute, and movable electrode 3 is connected with apply device 10.Apply device 10 by the hydraulic control portion 30 of the drive division 20 that drives movable electrode 3, Control work liquid, always accumulate for toward the reservoir (pressure accumulater) 40 of the high-pressure work liquid of drive division 20, produce the formations such as pump parts 50 of high-pressure work liquid.The detailed construction of each one is as follows.
For brake actuator piston 22 when opening a way release, in the 2nd liquid chamber 25, be provided with damper portion (ダ Application パ portion) 26 and the 25a of dampening chamber (ダ Application パ chamber).Damper portion 26 protrudes in the end of driven plunger 22.The 25a of dampening chamber boosts working solution by the action of damper portion 26.On the next door that forms the 25a of dampening chamber, be provided with throttle orifice (the オ リ ヮ ィ ス) 25b that inserts for damper portion 26.Damper portion 26 for example is the protuberance of the reservation shape that is made of cylinder, circular cone, curved surface etc., and the diameter of throttle orifice 25b is slightly greater than the maximum gauge of damper portion 26.
More particularly, the effect of the 25a of dampening chamber is as follows.That is, at open circuit during release, along with damper portion 26 is inserted into throttle orifice 25b, the pressure liquid in the 25a of dampening chamber is gradually by the gap discharge between damper portion 26 and the throttle orifice 25b, discharge rate after a little while, 25a is compressed in dampening chamber.Like this, the pressure in the 25a of dampening chamber rises, and braking force affacts on the driven plunger 22, so driven plunger 22 stops.
But, in the above-mentioned existing apply device,, have following problem along with the high capacity and the ultra high voltageization of transmission system in recent years.
Usually,, open and close the apply device of gas-break switch contact portion, also require the high capacity and the high speed of operating physical force along with the high capacity and the ultra high voltageization of transmission system.Therewith accordingly, in the apply device, strengthen the diameter of driven plunger, perhaps improve the system pressure of apply device, therefore, operating energy increases.
The increase of operating energy, the braking force during to the circuit breaker switching action, especially to the open circuit release has big influence.For example, in the apply device shown in Figure 11, when operating energy increases, just need to produce bigger braking force, in order to obtain bigger braking force, the pressure that will strengthen the 25a of dampening chamber rises.But, the 25a of dampening chamber is adjacent with sealing 22a with the liquid chamber sealing that is located between driven plunger 22 liquid chamber on every side, so, if the pressure for braking with the 25a of dampening chamber rises excessive, then on the sealing 22a of the 25a of dampening chamber, act on excessive pressure, might damage the 22a of sealing portion.
In addition, the zero hour of open circuit action,,, wish to begin quickly action in order to ensure high breaking capability because the breaking capability of circuit breaker is had big influence.In closed circuit action, also wish constantly to begin action accurately.
The present invention makes in view of the above problems, and its purpose is to provide the apply device of a kind of small-sized, simple structure, reliable in action and superior durability.
To achieve these goals, the present invention takes following technical scheme:
Apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part;
Above-mentioned drive division has, driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, this drive division makes the closed circuit or open circuit of above-mentioned circuit breaker switching portion according to the action of described driven plunger;
Above-mentioned hydraulic control portion according to the selection that working fluid is supplied with and discharged with respect to the 2nd liquid chamber of described driving cylinder, carries out hydraulic control;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in described driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously, it is characterized in that:
In above-mentioned the 2nd liquid chamber, braking when opening a way release, be provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also be provided with the dampening chamber that the action by damper portion is boosted working fluid, this dampening chamber has the patchhole that inserts for damper portion, and this dampening chamber is arranged on and is located at hydraulic packing around the driven plunger with sealing adjoining position not.
Described apply device is characterized in that, the front end face of above-mentioned damper portion is formed, and on its part, has the shape of selecting by from convex form and concave shape.
Described apply device is characterized in that, is provided with the throttling stream in above-mentioned driven plunger.
Described apply device is characterized in that, is provided with the movable next door parts of separating above-mentioned the 2nd liquid chamber and above-mentioned dampening chamber, and above-mentioned patchhole is located on these next door parts, also is provided with the spring that these next door parts is become the maximum side application of force towards dampening chamber's volume.
Apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part,
Above-mentioned drive division has, driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, according to the action of described driven plunger, make above-mentioned circuit breaker switching portion become closed circuit or open circuit;
Above-mentioned hydraulic control portion according to supply and the discharge of working fluid with respect to the 2nd liquid chamber of described driving cylinder, carries out hydraulic control;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in described driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously; It is characterized in that,
In above-mentioned the 2nd liquid chamber, the braking when opening a way release is provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also is provided with the dampening chamber that the action by damper portion is boosted working fluid, and this dampening chamber has the patchhole that inserts for damper portion; On above-mentioned driven plunger, the hydraulic packing around it with sealing by the 2nd liquid chamber one side, be provided with pressure ring, simultaneously, also be provided with to be starting point between sealing portion and the pressure ring, to connect the fluid passage that the 2nd liquid chamber is led in driven plunger inside.
Described apply device is characterized in that, is provided with at above-mentioned drive division and flows out the road, and during braking when the open circuit release, above-mentioned dampening chamber boosts to scheduled pressure value when above, and this outflow road makes working fluid flow out from dampening chamber.
Apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part;
Above-mentioned drive division has, driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, this drive division is according to the action of driven plunger, makes above-mentioned circuit breaker switching portion become closed circuit or open circuit;
Above-mentioned hydraulic control portion according to the selection that working fluid is supplied with and discharged with respect to the 2nd liquid chamber of driving cylinder, carries out hydraulic control;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in described driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously; It is characterized in that,
In above-mentioned the 2nd liquid chamber, the braking when opening a way release is provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also is provided with the dampening chamber that the action by damper portion is boosted working fluid, and this dampening chamber has the patchhole that inserts for damper portion; Be provided with at above-mentioned drive division and flow out the road, during braking when the open circuit release,, flow out the road working fluid is flowed out from dampening chamber when above-mentioned dampening chamber boosts to scheduled pressure value when above.
Described apply device is characterized in that, is provided with on above-mentioned driving cylinder, when closed circuit action, make working fluid flow into the inflow road of above-mentioned dampening chamber, when the open circuit release, when the pressure of dampening chamber was higher than the pressure of connected component, this inflow road was closed.
Described apply device is characterized in that, is provided with the baffle plate of decision closed circuit state position on above-mentioned drive rod.
Apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part;
Above-mentioned drive division have driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, this drive division is according to the action of described driven plunger, makes above-mentioned circuit breaker switching portion become closed circuit or open circuit;
Hydraulic control is carried out in the selection that above-mentioned hydraulic control portion supplies with and discharges with respect to the 2nd liquid chamber of driving cylinder according to working fluid;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously; It is characterized in that,
In above-mentioned the 1st liquid chamber, the braking during for closed circuit release, the leading section of above-mentioned driven plunger is formed as damper portion, and, also being provided with the dampening chamber that the action by damper portion is boosted working solution, this dampening chamber has the patchhole for this damper portion;
Be provided with the movable next door parts of separating above-mentioned the 1st liquid chamber and above-mentioned dampening chamber, above-mentioned patchhole is located on these next door parts, simultaneously, also is provided with the spring that these next door parts is become the maximum side application of force towards dampening chamber's volume.
Described apply device, it is characterized in that, on above-mentioned driving cylinder, the hydraulic packing of the above-mentioned drive rod breakthrough part of its body end with sealing by the 1st liquid chamber side, be provided with pressure ring, also be provided with between sealing portion and the pressure ring to be the fluid passage that starting point, perforation driving cylinder body interior arrive the high-pressure side part that comprises the 1st liquid chamber.
Among the present invention, by improving the structure of dampening chamber's periphery,, can prevent that also excessive pressure from acting on the sealing that is disposed at around the driven plunger even the pressure of dampening chamber rises and strengthens during braking.
That is, apply device of the present invention has drive division, hydraulic control portion, reservoir, pump and low pressure slot part;
Above-mentioned drive division have driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, the action of this drive division and driven plunger correspondingly makes above-mentioned circuit breaker switching portion become closed circuit or open circuit;
Above-mentioned hydraulic control portion carries out hydraulic control according to the supply and the discharge of working fluid with respect to the 2nd liquid chamber of driving cylinder;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously.
In the invention of being put down in writing, be in above-mentioned basic apply device, it is characterized in that,
In above-mentioned the 2nd liquid chamber, the braking when opening a way release is provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also is provided with the dampening chamber that the action by damper portion is boosted working fluid, and this dampening chamber has the patchhole that inserts for damper portion; This dampening chamber not with the hydraulic packing sealing adjacency that is located at around the driven plunger.
According to this structure, because the position of sealing and dampening chamber around driven plunger relation, during braking when the open circuit release,, sealing is not directly acted on excessive pressure even the pressure of dampening chamber rises greatly yet.Therefore, can prevent that excessive pressure from causing the damage of sealing.
In the apply device of being put down in writing, it is characterized in that the front end face of above-mentioned damper portion on its part, has convex form or concave shape.
According to this structure, when closed circuit action begins, the action of driven plunger is begun well.That is, if the front end face of damper portion only is the plane, then at the open-circuit condition of circuit breaker, when the front end of damper portion connects airtight the dampening chamber end, when closed circuit action begins, immerse before this connects airtight portion at working solution, can not remove tightlock status, the time of action beginning may postpone.And in the device of present embodiment, as described in claim 2, owing to be provided with protuberance or recess at the front end face of damper portion, reduced and connected airtight area, simultaneously, when closed circuit action begins, can make to immerse in the working solution short time and connect airtight in the gap, so, the action of driven plunger is begun well.
In addition, impact during the open circuit release, might make the leading section distortion of damper portion, consider this point, protuberance is set, like this at front end face, make distortion only rest on protuberance, and the patchhole of dampening chamber and the gap between damper portion relation does not change, so, the influence of the braking force of the distortion that can prevent damper portion during to the open circuit action.
Put down in writing in the apply device, it is characterized in that, in above-mentioned driven plunger, be provided with the throttling stream.
According to this structure, not that flow path area by gap between fine adjustment dampening chamber and the damper portion comes pressure in the fine adjustment dampening chamber rise (this pressure rise the braking when being used to open a way action), but the flow path area by fine adjustment throttling stream, the fine adjustment of carrying out the pressure rising dampening chamber in.So, can high accuracy obtain needed braking characteristic.This compares with the gap between the damper portion with dampening chamber, and the machining accuracy that improves the throttling stream is easier, and the size management is also easy.
In the apply device of being put down in writing, it is characterized in that, be provided with the movable next door parts of separating above-mentioned the 2nd liquid chamber and above-mentioned dampening chamber, on these next door parts, be provided with patchhole, also be provided with the spring that these next door parts is become maximum direction pushing towards dampening chamber's volume.
According to this structure, when closed circuit action begins, the action of driven plunger is begun well.That is, if only separate the 2nd liquid chamber and dampening chamber with fixing next door, then after closed circuit action began, when driven plunger began to move immediately, along with the damper portion of driven plunger is extracted from the 2nd liquid chamber side, it is big that the volume of dampening chamber becomes, the pressure reduction dampening chamber in.And as described in the claim 4, owing to be provided with movable next door parts, and along with extracting of damper portion, the direction action that the next door parts are reduced towards dampening chamber's volume.Therefore, when closed circuit action begins, damper portion can be extracted from dampening chamber apace, the action of driven plunger is begun well.In addition, when braking when the open circuit release, because the pressure in the dampening chamber rises, braking force affacts on the driven plunger, and simultaneously, the next door parts remain on dampening chamber's volume becomes maximum position.
The invention of being put down in writing, be in above-mentioned basic apply device, it is characterized in that, in the 2nd liquid chamber, braking when opening a way release is provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also be provided with the dampening chamber that the action by damper portion is boosted working fluid, this dampening chamber has the patchhole that inserts damper portion; On above-mentioned driven plunger, the hydraulic packing around it with sealing by the 2nd liquid chamber one side, be provided with pressure ring, simultaneously, also be provided with to be starting point between sealing portion and the pressure ring, to connect the inner fluid passage that arrives the 2nd liquid chamber of driven plunger.
According to this structure, owing to be provided with pressure ring between sealing around driven plunger and the dampening chamber, when the braking of open circuit during release, big even the pressure of dampening chamber rises, can directly not act on excessive pressure to the sealing around the driven plunger yet.That is, insert in damper portion under the situation of dampening chamber, be equivalent to its liquid that inserts cubical content and discharge from the gap between patchhole and the dampening chamber, dampening chamber's internal pressure rises, the action of brake actuator piston, but at this moment, the major part of the working fluid that has boosted can be sealed up by pressure ring.In addition, the part of the working fluid that has boosted, though passed through pressure ring, the working fluid that should spill from pressure ring can be by being that the fluid passage of starting point is discharged to the 2nd liquid chamber between pressure ring and sealing.Therefore, can prevent that pressure because of excessive from causing the damage of sealing.
In the apply device of being put down in writing, it is characterized in that, be provided with at above-mentioned drive division and flow out the road that during braking when the open circuit release, above-mentioned dampening chamber boosts to scheduled pressure value when above, this outflow road makes working fluid flow out from dampening chamber.
According to this structure, when the open circuit release, when the abrupt pressure more than producing necessarily in the dampening chamber rises, owing to can working fluid be flowed out from dampening chamber by flowing out the road, so, can prevent to produce certain above fierce braking power because of pressure rises, can obtain stable braking force.In addition, even the sealing around the driven plunger can directly not act on excessive pressure to sealing in abutting connection with dampening chamber yet, so, can prevent to cause damage to sealing because of excessive pressure.
In the apply device of being put down in writing, it is characterized in that, the time make working fluid flow into the inflow road of above-mentioned dampening chamber being provided with on the above-mentioned drive division, when the open circuit release in closed circuit action, when the pressure of dampening chamber was higher than the pressure of connected component, this inflow road was closed.
According to this structure, owing to the inflow road is set, can strengthen the supply of the high pressure working fluid in dampening chamber when closed circuit action begins at drive division, the action of driven plunger is begun well.In addition, when the open circuit release, flow into the road when pressure ratio connecting pipeline of dampening chamber and liquid chamber are high and close, so, can obtain sufficient dampening chamber pressure and rise, braking force does not reduce.
In the apply device of being put down in writing, it is characterized in that, on drive rod, be provided with the baffle plate of decision closed circuit state position.
According to this structure, can bear the braking of open circuit during release by the switching contact side of drive division and impact, near the very little space the drive rod breakthrough part of driving cylinder obtains the structure of sufficient intensity.In addition, because the damper portion front end face of driven plunger does not connect airtight the end of dampening chamber,, the action of driven plunger is begun well so when closed circuit action, working fluid flows into the entire back of driven plunger easily.
The invention of being put down in writing, be in above-mentioned basic apply device, it is characterized in that, in above-mentioned the 1st liquid chamber, braking during for closed circuit release, the leading section of above-mentioned driven plunger forms as damper portion, also is provided with the dampening chamber that the action by damper portion is boosted working solution, and this dampening chamber has the patchhole that inserts this damper portion;
Be provided with the movable next door parts of separating above-mentioned the 1st liquid chamber and above-mentioned dampening chamber, above-mentioned patchhole is located on these next door parts, and simultaneously, also being provided with becomes the spring that maximum thruster is pressed with these next door parts towards dampening chamber's volume.
According to this structure, when open circuit action beginning, the action of driven plunger is begun well.That is, if separate the 1st liquid chamber and dampening chamber with fixing next door, then when open circuit action beginning rear drive piston began to move immediately, along with the damper portion of driven plunger is extracted from the 1st liquid chamber, it is big that the volume of dampening chamber becomes, so the pressure of dampening chamber reduces.And when movable next door parts are set as described like this, along with extracting of damper portion, the direction action that movable next door parts are diminished towards dampening chamber's volume.Therefore, during open circuit action beginning, can apace damper portion be extracted from dampening chamber, the action of driven plunger is begun well.In addition, when the braking of closed circuit release, because the rising of the pressure in the dampening chamber, so in the time of to driven plunger effect braking force, the next door parts remain on dampening chamber's volume becomes maximum position.
In the apply device of being put down in writing, it is characterized in that, on above-mentioned driving cylinder, the hydraulic packing of the above-mentioned drive rod breakthrough part of its body end with sealing by the 1st liquid chamber side, be provided with pressure ring, also be provided with between sealing portion and the pressure ring to be the fluid passage that starting point, perforation driving cylinder body interior arrive the high-pressure side part that comprises the 1st liquid chamber.
According to this structure, owing between the sealing of the drive rod breakthrough part of driving cylinder body end and the 1st liquid chamber, be provided with pressure ring, so, during braking when closed circuit release, even it is very big that the pressure of dampening chamber rises, the sealing that seals drive rod portion hydraulic pressure is not directly acted on excessive pressure yet.That is, insert in damper portion under the situation of dampening chamber, be equivalent to its liquid that inserts cubical content and discharge, produce pressure in the dampening chamber and rise the action of brake actuator piston from the gap between patchhole and the damper portion.At this moment, the major part of the working fluid that has boosted can be sealed by pressure ring.In addition,, be somebody's turn to do the working fluid that spills from pressure ring, can be discharged on high-tension side part by to be the fluid passage of starting point between pressure ring and sealing though the part of the working fluid that has boosted has been passed through pressure ring.Therefore, can prevent to cause the operation of sealing because of excessive pressure.
With reference to the accompanying drawings, describe embodiments of the invention in detail.
Fig. 1 is the structural map of the 1st embodiment of expression apply device of the present invention.
Fig. 2 is the structural map of the 2nd embodiment of expression apply device of the present invention.
Fig. 3 is the structural map of the 3rd embodiment of expression apply device of the present invention.
Fig. 4 is the structural map of the 4th embodiment of expression apply device of the present invention.
Fig. 5 is the structural map of the 5th embodiment of expression apply device of the present invention.
Fig. 6 is the structural map of the 6th embodiment of expression apply device of the present invention.
Fig. 7 is the structural map of the 7th embodiment of expression apply device of the present invention.
Fig. 8 is the structural map of the 8th embodiment of expression apply device of the present invention.
Fig. 9 is the structural map of the 9th embodiment of expression apply device of the present invention.
Figure 10 is the structural map of the 10th embodiment of expression apply device of the present invention.
Figure 11 is the structural map of the gross morphology of the existing apply device of expression.
The following describes embodiments of the invention.1. the 1st embodiment
With reference to Fig. 1 the exemplary embodiments of implementing apply device of the present invention is described earlier.Fig. 1 is the structural map that expression is applicable to the 1st embodiment of apply device of the present invention.1-1. the structure of apply device
As shown in Figure 1, circuit breaker switching portion 1 is made of fixed electrode 2 and movable electrode 3.Movable electrode 3 is connected with apply device 10.In addition, the structure of this switching portion 1 also can be made relative motion ground by 2 electrodes in opposite directions and constitute only as an example.Apply device 10 is by the hydraulic control portion 30 of the drive division 20 that drives movable electrode 3, Control work liquid, accumulate for constituting toward the reservoir 40 of the high-pressure work liquid of drive division 20, the pump parts 50 etc. that produce high-pressure work liquid always.In these structural elements, hydraulic control portion 30, reservoir 40 and pump parts 50 are with shown in Figure 11 of the prior art identical, so, the structural feature of the drive division 20 among the present invention only is described below.
For brake actuator piston 22 when opening a way release, in the 2nd liquid chamber 25, be provided with the 25a of damper portion 26 and dampening chamber (ダ Application パ chamber).Damper portion 26 protrudes in the end of driven plunger 22.The 25a of dampening chamber boosts working solution by the action of damper portion 26.On the next door that forms the 25a of dampening chamber, be provided with the throttle orifice 25b that inserts damper portion 26.Damper portion 26 for example is the protuberance of the reservation shape that is made of cylinder, circular cone, curved surface etc., and the diameter of throttle orifice 25b is slightly greater than the maximum gauge of damper portion 26.
The 25a of dampening chamber is not and to carry out the sealing 22a of 24,25 hydraulic packings of liquid chamber adjacent, is end position in the driving cylinder 21 but be configured in position away from the 22a of sealing portion.In addition, at the front end face of damper portion 26, be provided with cylindrical shape or conical protuberance 26a less than damper portion 26 diameters.
The effect of present embodiment apply device with above-mentioned structure is as follows.Fig. 1 represents the open circuit operate condition of switching portion 1.
At open circuit operate condition shown in Figure 1, reservoir 40 utilizes the compressibility of nitrogen 40a to hold liquid, pressure accumulation by pump 51, often acts on from the high-pressure work liquid of reservoir 40 on the face of the 1st liquid chamber 24 1 sides of driven plunger 22.On-off action carries out like this: by the excitation of the electromagnetically operated valve 32 of hydraulic control portion 30, transfer valve 31 actions are supplied with high-pressure work liquid in the 2nd liquid chamber 25, perhaps the high pressure in the 2nd liquid chamber 25 are discharged in the trough 52 as hydrodynamic.Usually, carry out closed circuit action, by discharging the action of opening a way of high-pressure work liquid by supplying with high-pressure work liquid.
Braking during the open circuit release is carried out as follows.Promptly, when the open circuit release, along with moving of driven plunger 22, the damper portion 26 that is located at its end is inserted throttle orifice (オ リ ヮ ィ ス) 25b, staying the very little 15a of dampening chamber with gap between this damper portion 26 and throttle orifice 25b becomes blocked state, damped 26 compression.Like this, the working solution in the 25a of dampening chamber is difficult to discharge, and its pressure rises, and produces braking force, and the open circuit responsiveness is reduced, and plays braking action.When this is braked, even the pressure of the 25a of dampening chamber rise to strengthen, because the 25a of the dampening chamber 22a of contiguous seal portion not, so the pressure of the 25a of the dampening chamber excessive pressure that produces that rises does not act directly on the sealing 22a.Therefore, can fully alleviate the pressure that acts on the sealing 22a, prevent to cause the damage of sealing 22a because of excessive pressure.
At the open-circuit condition of circuit breaker, because the pressure of the 2nd liquid chamber 25 sides approximates atmospheric pressure, so, keeping open-circuit condition by pressure differential with the 1st liquid chamber 24.And in closed circuit state, owing to the 2nd liquid chamber 25 sides equate with the pressure of the 1st liquid chamber 24 sides, so, keeping closed circuit state by the compression face product moment.
In the device of present embodiment,, when closed circuit action begins, the action of driven plunger 22 is begun well owing to protuberance 26a is set at the front end of damper portion 26.That is, if the front end face of damper portion 26 only is the plane, then at the open-circuit condition of circuit breaker, when the front end of damper portion 26 connects airtight the end of the 25a of dampening chamber, when closed circuit action begins, immerse before this connects airtight portion at working solution, can not remove tightlock status, the time of action beginning may postpone.And in the device of present embodiment, owing to be provided with protuberance 26a at the front end of damper portion 26, reduced and connected airtight area, simultaneously, when closed circuit action begins, can make to immerse in the working solution short time and connect airtight in the gap, so, the action of driven plunger 22 is begun well.1-3. the effect of apply device
As mentioned above, apply device according to present embodiment, because sealing 22a around the driven plunger 22 and the position of the 25a of dampening chamber relation, even during the braking when the open circuit release, the pressure of the 25a of dampening chamber rises and becomes big, can directly not act on excessive pressure to sealing 22a yet, so, the pressure that acts on the sealing 22a can fully be alleviated.Can prevent to cause the damage of sealing 22a because of excessive pressure.Therefore, reliable in action and durability in the time of can improving the open circuit action.
Owing on the front end face of damper portion 26, be provided with protuberance 26a, so, even the front end of damper portion 26 connects airtight the end of the 25a of dampening chamber, when closed circuit action begins, also can make the leading section that immerses damper portion 26 in the working solution short time, the action of driven plunger 22 is begun well.Therefore, the reliable in action in the time of can improving closed circuit the action.2. the 2nd embodiment
Fig. 2 is the figure that another embodiment of apply device of the present invention is implemented in expression.Especially expression is suitable for the figure of the apply device of invention of putting down in writing.The apply device of present embodiment is in the apply device of above-mentioned the 1st embodiment, has only changed the front end face shape of damper portion 26.That is, as shown in Figure 2, in the apply device of present embodiment,, protuberance 26a is not set, but is provided with 1 or several otch 26b at the front end face of damper portion 26.The structure of remainder is identical with the 1st embodiment.
According to this structure, with above-mentioned the 1st embodiment similarly, even the front end of damper portion 26 connects airtight the end of dampening chamber 25, when closed circuit action begins, also can make the leading section that immerses damper portion 26 in the working solution short time, so, the action of driven plunger 22 is begun well.In addition, the recess of otch arbitrary shape in addition is set, also can obtains same effect.3. the 3rd embodiment
Fig. 3 is the figure that another embodiment of apply device of the present invention is implemented in expression.Especially expression is suitable for the figure that claim 3 is put down in writing the apply device of invention.The apply device of present embodiment is in the apply device of above-mentioned the 1st embodiment, has only changed the structure of damper portion 26.That is, as shown in Figure 3, in the apply device of present embodiment, in the damper portion 26 of driven plunger 22, be provided with throttling stream 26c.
According to this structure, when the braking of open circuit during release, the high-pressure work liquid in the 25a of dampening chamber is not only from the discharge of the gap between damper portion 26 and the throttle orifice 25b, and discharges from throttling stream 26c.At this moment, throttling stream 26c can precision regulate flow path area well than the gap between damper portion 26 and the throttle orifice 25b.That is, compare with the gap between the throttle orifice 25b with damper portion 26, the easier raising of machining accuracy of throttling stream 26c, the size management is also carried out easily.Therefore, regulate the throttling degree of this throttling stream 26c, the pressure in the dampening chamber that is used to brake when the fine adjustment open circuit moves accurately rises, and can high accuracy obtain required braking characteristic.Reliable in action when therefore, more improving the open circuit action.4. the 4th embodiment
Fig. 4 is the figure that another embodiment of apply device of the present invention is implemented in expression.Especially expression is suitable for the figure that claim 4 is put down in writing the apply device of invention.The feature of the apply device of present embodiment is in the apply device of above-mentioned the 1st embodiment, movably to constitute the next door of interval the 2nd liquid chamber 25 and the 25a of dampening chamber with cylindric lining (next door parts) 25c.This lining 25c is made of wall part that comprises patchhole and week slides in driving cylinder 21 cylindrical portion, is become maximum thruster by spring 25d towards the volume of the 25a of dampening chamber and presses.
According to this structure, when the braking of open circuit during release, because the pressure in the 25a of dampening chamber rises, so braking force acts on the driven plunger 22, the lining 25c volume that remains on the 25a of dampening chamber is maximum primary position simultaneously.In addition, when closed circuit action begins, the action of driven plunger 22 is begun well.That is, after closed circuit action had just begun, along with extracting of damper portion 26, the volume in the 25a of dampening chamber increased, and the pressure in the 25a of dampening chamber reduces, so lining 25c moves towards the direction that the volume in the 25a of dampening chamber reduces.As a result, the pressure in the 25a of dampening chamber descends and is suppressed, and driven plunger 22 is extracted from the 25a of dampening chamber easily.Therefore, when closed circuit action begins, can fast damper portion 26 be extracted from the 25a of dampening chamber, the action of driven plunger 22 is begun well.
Below, describe the effect of this movable lining 25c in detail.
During the open circuit release, when damper portion 26 is inserted the patchhole of lining 25c, from the external diameter of damper portion 26 and the gap between the patchhole 25b, discharge the working solution that equates with the insertion volume of damper portion 26, because the setting at interval of this part, the internal pressure of the 25a of dampening chamber rises, and braking force affacts on the driven plunger 22, simultaneously, lining 25c remains on the primary position of the volume of the 25a of dampening chamber for maximum.
In the closed circuit action, when the direction opposite with open circuit action drives driven plunger 22, working solution must be supplied with in the 25a of dampening chamber, the amount of this working solution will be equivalent to extract from the 25a of dampening chamber the volume of the amount of damper portion 26, still, because the setting in gap relation, liquid stream is by throttling, produce pressure in the 25a of dampening chamber and descend, because this pressure descends, lining 25c moves in the 25a of dampening chamber.As a result, the pressure in the 25a of dampening chamber descends and reduces, and can reduce braking force, improves the responsiveness of driven plunger 22.
If do not have the such movable part of lining 25c at the 25a of dampening chamber, after the action beginning, when driven plunger 22 was moved immediately, along with the leading section of damper portion 26 is extracted, the volume of the 25a of dampening chamber increased, so the pressure in the 25a of dampening chamber reduces, braking force works.In the present embodiment, descend, lining 25c is moved towards the direction that the volume of the 25a of dampening chamber reduces in order to prevent this pressure.
According to this structure, as previously mentioned, when closed circuit action began, the damper portion 26 of driven plunger 22 was extracted from the 25a of dampening chamber fast, and, can not produce the braking force of following action, so, the action of driven plunger 22 is begun well.Therefore, the reliable in action in the time of can improving closed circuit the action more.5. the 5th embodiment
Fig. 5 is the figure that another embodiment of apply device of the present invention is implemented in expression.The apply device of present embodiment is in the apply device of above-mentioned the 1st embodiment, working solution is supplied with the inflow road 27a of the 25a of dampening chamber when drive division 20 is provided with only in closed circuit action.During the open circuit release, when the pressure of the 25a of dampening chamber was higher than the pressure of connected component, this inflow road 27a closed.
According to this structure, when closed circuit action begins, can the action of driven plunger 22 be begun well by the supply that flows in the past dampening chamber 25 of road 27a reinforcement high-pressure work liquid.In addition, when the open circuit release, when the pressure of the 25a of dampening chamber is higher than connecting pipeline or liquid chamber, flows into road 27a and close, like this, the pressure of the 25a of dampening chamber is risen, braking force does not reduce.Reliable in action when therefore, improving closed circuit the action more.In addition, this structure also can be used for sealing 22a shown in Figure 11, driven plunger 22 and the adjacent structure of the 25a of dampening chamber, also can obtain same effect.6. the 6th embodiment
Fig. 6 is the figure that another embodiment of apply device of the present invention is implemented in expression.The apply device of present embodiment is in the apply device of above-mentioned the 1st embodiment, is provided with the baffle plate 23a of decision closed circuit state position on the drive rod 23.
According to this structure, to bear the braking of open circuit during release by the switching contact side of drive division 20 and impact, near the very little space drive rod 23 breakthrough parts of driving cylinder 21 obtains the structure of sufficient intensity.In addition, because the end that the damper portion front end face of driven plunger 22 does not connect airtight the 25a of dampening chamber so when closed circuit action began, working solution flowed into the entire back of driven plunger 22 easily, can make the action of driven plunger 22 begin well.Therefore, improve reliable in action and durability more.In addition, this structure also can be used for sealing 22a shown in Figure 11, driven plunger 22 and the adjacent structure of the 25a of dampening chamber, also can obtain same effect.7. the 7th embodiment
Fig. 7 is the figure that another embodiment of apply device of the present invention is implemented in expression.
As shown in Figure 7, in the apply device of present embodiment, 25a of dampening chamber in the 2nd liquid chamber 25 and existing structure shown in Figure 11 similarly are located at and the driven plunger 22 adjacent position of sealing 22a on every side.Sealing 22a around the driven plunger 22 by the 2nd liquid chamber 25 1 sides, be provided with pressure ring 22b.Also be provided with in addition between pressure ring 22b and the sealing 22a to be starting point, the perforation driven plunger 22 inner fluid passage 22c that arrive the 2nd liquid chambers 25.More particularly, fluid passage 22c connects the inside of driven plunger 22 and damper portion 26, at the front end face opening of damper portion 26.
According to this structure, during the braking of open circuit release, when damper portion 26 was inserted the 25a of dampening chamber, the major part of the working solution that has boosted can be sealed by pressure ring 22b.In addition, the part of the working solution that has boosted, though by pressure ring 22b,, the working fluid from this pressure ring 22b spills can be discharged to the 2nd liquid chamber 25 by to be the fluid passage 22c of starting point between pressure ring 22b and the sealing 22a.Therefore, the pressure that acts on the sealing 22a can be alleviated greatly, the damage of sealing 22a can be prevented to cause because of excessive pressure.Therefore, reliable in action and durability in the time of can improving the open circuit action.8. the 8th embodiment
Fig. 8 is the figure that another embodiment of apply device of the present invention is implemented in expression.
As shown in Figure 8, in the apply device of present embodiment, the 25a of dampening chamber in the 2nd liquid chamber 25, with above-mentioned the 7th embodiment and existing structure shown in Figure 11 similarly, be located at and the adjacent position of sealing 22a around the driven plunger 22a.Be provided with at drive division 20 and flow out road 27b, during braking when the open circuit release, when the excessive pressure ground of the 25a of dampening chamber boosts to scheduled pressure value when above, this outflow road 27b is used for from the 25a of dampening chamber discharge working solution.
According to this structure, when the open circuit release, if having produced excessive abrupt pressure in the 25a of dampening chamber rises, can discharge working solution from the 25a of dampening chamber by flowing out road 27b, therefore, can suppress predetermined above abrupt pressure and rise, prevent to produce rapid and excessive braking force, can obtain stable braking force.In addition, owing to excessive pressure does not act directly on the driven plunger 22 sealing 22a on every side, so, can alleviate the pressure that acts on the sealing 22a greatly, can prevent to cause the damage of sealing 22a because of excessive pressure.Therefore, reliable in action and durability in the time of can improving the open circuit action.In addition, this structure also can be used for above-mentioned the 1st to 6 embodiment sealing 22a such, driven plunger 22 not in abutting connection with the structure of the 25a of dampening chamber, also can obtain same effect.9. the 9th embodiment
Fig. 9 is the figure that another embodiment of apply device of the present invention is implemented in expression.
As shown in Figure 9, in the apply device of present embodiment, the 25a of dampening chamber in the 2nd liquid chamber 25, with the 7th, 8 embodiment and existing structure shown in Figure 11 similarly, be located at and driven plunger 22 around the adjacent position of sealing 22a.
In the present embodiment, the braking during for closed circuit release, the 24a of dampening chamber is located in the 1st liquid chamber 24.The damper portion 22d that the 24a of this dampening chamber uses is that the leading section by drive rod 23 1 sides of driven plunger 22 forms.In addition, separate the next door of the 1st liquid chamber 24 and the 24a of dampening chamber, 24c movably constitutes by the cylindric lining that comprises patchhole 24b (next door parts).Among this lining 24c and above-mentioned the 4th embodiment at the employed lining 25c of the 2nd liquid chamber 25 1 sides similarly, constitute by wall part that comprises patchhole 24b and week slides in driving cylinder (シ リ Application ダ) 21 cylindrical portion, become maximum thruster by spring 24d towards the volume of the 24a of dampening chamber and press.
According to this structure, during braking when closed circuit release, because the pressure in the 24a of dampening chamber rises, braking force acts on the driven plunger 22, and simultaneously, the volume that lining 24c remains on the 24a of dampening chamber is maximum primary position.In addition, when open circuit action beginning, the action of driven plunger 22 is begun well.That is, after open circuit action had just begun, along with extracting of damper portion 22d, the volume in the 24a of dampening chamber increased, and the pressure in the 24a of dampening chamber reduces, so lining 24c moves towards the direction that the volume of the 24a of dampening chamber reduces.As a result, the pressure in the 24a of dampening chamber descends and is suppressed, and driven plunger 22 is extracted from the 24a of dampening chamber easily.Therefore, when open circuit action beginning, can apace damper portion 22d be extracted from the 24a of dampening chamber, the action of driven plunger 22 is begun well.Therefore, the reliable in action in the time of can improving the open circuit action.10. the 10th embodiment
Figure 10 is the figure that another embodiment of apply device of the present invention is implemented in expression.The apply device of present embodiment is in the apply device of above-mentioned the 9th embodiment, the stem seal 21a of the drive rod breakthrough part of driving cylinder 21 body end by the 1st liquid chamber 24 1 sides, be provided with pressure ring 21b.In addition, also be provided with fluid passage 21c to be starting point between pressure ring 21b and the stem seal 21a, to connect driving cylinder 21 body interior and be communicated with pipeline 33.
According to this structure, during braking when closed circuit release, when damper portion 22d inserts the 24a of dampening chamber, the major part that available pressure sealing ring 21b seals the working solution that boosts.In addition, the part of working solution of having boosted, though passed through pressure ring 21b, the working fluid from this pressure ring 21b spills can be discharged in the pipeline 33 by to be the fluid passage 21c of starting point between pressure ring 21b and the stem seal 21a.Therefore, can alleviate the pressure that acts on the stem seal 21a greatly, can prevent because of excessive pressure causes stem seal 21a damage, therefore, reliable in action and durability in the time of can improving closed circuit the action more.In addition, as the variation of this embodiment, can with fluid passage 21c be connected other high-pressure side part promptly the pipe arrangement of the 1st liquid chamber 24, reservoir 40, pump 50 etc. be communicated with, also can obtain same effect.11. other embodiment
The invention is not restricted to each above-mentioned embodiment, can make various embodiment within the scope of the present invention.For example, also above-mentioned the 1st～10 embodiment suitably can be combined.Specifically, the adaptive damping chamber also can constitute like this, that is, the structure group that is formed by the 24a of dampening chamber, lining 24c and spring 24d among the structure and the 9th that is formed by the 25a of dampening chamber, lining 25c and spring 25d among the 4th embodiment, 10 embodiment is gone in the same apply device.Like this, braking in the time of can improving when action open circuit and closed circuit action and the initiating when improving the action beginning.Such structure also within the scope of the present invention.In addition, the concrete shape and the size of each one such as driving cylinder, driven plunger, drive rod, liquid chamber, fluid passage, dampening chamber, damper portion, next door parts also can suitably be selected.
Effect of the present invention:
As mentioned above, according to the present invention, at the drive division of apply device, brake during the open circuit release With dampening chamber be configured in position away from the sealing around the driven plunger, near perhaps setting sealing Pressure ring perhaps arranges and makes outflow road that working solution flows out from dampening chamber etc., can prevent the sealing damage, So, the apply device that can provide small-sized, simple structure, has Reliability of Microprocessor and durability.
In addition, braking dampening chamber when consisting of changeably the open circuit release perhaps designs damper portion The front end face shape perhaps arranges inflow road etc. from working solution to dampening chamber that supply with, can improve closed circuit action when beginning Initiating. In addition, the braking during for closed circuit release is by arranging variable resistance in drive rod one side The Buddhist nun chamber, the initiating in the time of can improving open circuit action beginning.
Claims (11)
1. apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part;
Above-mentioned drive division has, driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, this drive division makes the closed circuit or open circuit of above-mentioned circuit breaker switching portion according to the action of described driven plunger;
Above-mentioned hydraulic control portion according to the selection that working fluid is supplied with and discharged with respect to the 2nd liquid chamber of described driving cylinder, carries out hydraulic control;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in described driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously, it is characterized in that:
In above-mentioned the 2nd liquid chamber, braking when opening a way release, be provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also be provided with the dampening chamber that the action by damper portion is boosted working fluid, this dampening chamber has the patchhole that inserts for damper portion, and this dampening chamber is arranged on and is located at hydraulic packing around the driven plunger with sealing adjoining position not.
2. apply device as claimed in claim 1 is characterized in that the front end face of above-mentioned damper portion is formed, and on its part, has the shape of selecting by from convex form and concave shape.
3. apply device as claimed in claim 1 is characterized in that, is provided with the throttling stream in above-mentioned driven plunger.
4. apply device as claimed in claim 1, it is characterized in that, be provided with the movable next door parts of separating above-mentioned the 2nd liquid chamber and above-mentioned dampening chamber, above-mentioned patchhole is located on these next door parts, also is provided with the spring that these next door parts is become the maximum side application of force towards dampening chamber's volume.
5. apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part,
Above-mentioned drive division has, driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, according to the action of described driven plunger, make above-mentioned circuit breaker switching portion become closed circuit or open circuit;
Above-mentioned hydraulic control portion according to supply and the discharge of working fluid with respect to the 2nd liquid chamber of described driving cylinder, carries out hydraulic control;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in described driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously; It is characterized in that,
In above-mentioned the 2nd liquid chamber, the braking when opening a way release is provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also is provided with the dampening chamber that the action by damper portion is boosted working fluid, and this dampening chamber has the patchhole that inserts for damper portion; On above-mentioned driven plunger, the hydraulic packing around it with sealing by the 2nd liquid chamber one side, be provided with pressure ring, simultaneously, also be provided with to be starting point between sealing portion and the pressure ring, to connect the fluid passage that the 2nd liquid chamber is led in driven plunger inside.
6. as claim 1 or 5 described apply devices, it is characterized in that, be provided with at above-mentioned drive division and flow out the road, during braking when the open circuit release, above-mentioned dampening chamber boosts to scheduled pressure value when above, and this outflow road makes working fluid flow out from dampening chamber.
7. apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part;
Above-mentioned drive division has, driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, this drive division is according to the action of driven plunger, makes above-mentioned circuit breaker switching portion become closed circuit or open circuit;
Above-mentioned hydraulic control portion according to the selection that working fluid is supplied with and discharged with respect to the 2nd liquid chamber of driving cylinder, carries out hydraulic control;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in described driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously; It is characterized in that,
In above-mentioned the 2nd liquid chamber, the braking when opening a way release is provided with from the outstanding damper portion of above-mentioned driven plunger, simultaneously, also is provided with the dampening chamber that the action by damper portion is boosted working fluid, and this dampening chamber has the patchhole that inserts for damper portion; Be provided with at above-mentioned drive division and flow out the road, during braking when the open circuit release,, flow out the road working fluid is flowed out from dampening chamber when above-mentioned dampening chamber boosts to scheduled pressure value when above.
8. as claim 1,5,7 described apply devices, it is characterized in that, on above-mentioned driving cylinder, be provided with, when closed circuit action, make working fluid flow into the inflow road of above-mentioned dampening chamber, when the open circuit release, when the pressure of dampening chamber was higher than the pressure of connected component, this inflow road was closed.
9. as claim 1,5,7 described apply devices, it is characterized in that, on above-mentioned drive rod, be provided with the baffle plate of decision closed circuit state position.
10. apply device has drive division, hydraulic control portion, reservoir, pump and low pressure slot part;
Above-mentioned drive division have driving cylinder, can be in driving cylinder driving piston sliding, connect the drive rod of this driven plunger and circuit breaker switching portion, the drive rod side and the opposition side thereof of the driven plunger in driving cylinder, form the 1st and the 2nd liquid chamber respectively, this drive division is according to the action of described driven plunger, makes above-mentioned circuit breaker switching portion become closed circuit or open circuit;
Hydraulic control is carried out in the selection that above-mentioned hydraulic control portion supplies with and discharges with respect to the 2nd liquid chamber of driving cylinder according to working fluid;
Above-mentioned reservoir keeps the pressure of the working fluid of the 1st liquid chamber supply in driving cylinder;
Said pump is boosted working fluid, and the high pressure working fluid that obtains is supplied with above-mentioned reservoir;
Above-mentioned low pressure slot part reclaims the working solution of discharging from above-mentioned the 2nd liquid chamber, accumulates the low pressure working fluid before boosting simultaneously; It is characterized in that,
In above-mentioned the 1st liquid chamber, the braking during for closed circuit release, the leading section of above-mentioned driven plunger is formed as damper portion, and, also being provided with the dampening chamber that the action by damper portion is boosted working solution, this dampening chamber has the patchhole for this damper portion;
Be provided with the movable next door parts of separating above-mentioned the 1st liquid chamber and above-mentioned dampening chamber, above-mentioned patchhole is located on these next door parts, simultaneously, also is provided with the spring that these next door parts is become the maximum side application of force towards dampening chamber's volume.
11. apply device as claimed in claim 10, it is characterized in that, on above-mentioned driving cylinder, the hydraulic packing of the above-mentioned drive rod breakthrough part of its body end with sealing by the 1st liquid chamber side, be provided with pressure ring, also be provided with between sealing portion and the pressure ring to be the fluid passage that starting point, perforation driving cylinder body interior arrive the high-pressure side part that comprises the 1st liquid chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP043689/1998 | 1998-02-25 | ||
| JP043689/98 | 1998-02-25 | ||
| JP04368998A JP4249281B2 (en) | 1998-02-25 | 1998-02-25 | Hydraulic operation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1235363A true CN1235363A (en) | 1999-11-17 |
| CN1110828C CN1110828C (en) | 2003-06-04 |
Family
ID=12670817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99100683 Expired - Lifetime CN1110828C (en) | 1998-02-25 | 1999-02-13 | Hydraulic operating device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4249281B2 (en) |
| CN (1) | CN1110828C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299014C (en) * | 2000-05-31 | 2007-02-07 | 东芝株式会社 | Hydraulic activator |
| CN100454467C (en) * | 2005-10-18 | 2009-01-21 | 王光顺 | Extra-high-voltage breaker permanent-magnet locked hydraulic operating mechanism |
| US8047120B2 (en) | 2005-02-10 | 2011-11-01 | Komatsu Ltd. | Hydraulic piston pump with a balance valve |
| CN103615587A (en) * | 2013-11-04 | 2014-03-05 | 国家电网公司 | Air-pressure-type switch triggering device |
| CN104217891A (en) * | 2014-09-11 | 2014-12-17 | 南车株洲电力机车有限公司 | Driving mechanism for vertical type vacuum circuit breaker |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386225C (en) * | 2006-01-24 | 2008-05-07 | 重庆特锐格科技有限公司 | Hydraulic pressure adjusting device |
| TWI598257B (en) * | 2016-05-25 | 2017-09-11 | Hydraulic brake signal transmitter | |
| CN106409543B (en) * | 2016-11-17 | 2018-05-01 | 国家电网公司 | Single armed stretch clamp type disconnecting switch auxiliary switching-off device |
-
1998
- 1998-02-25 JP JP04368998A patent/JP4249281B2/en not_active Expired - Fee Related
-
1999
- 1999-02-13 CN CN 99100683 patent/CN1110828C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299014C (en) * | 2000-05-31 | 2007-02-07 | 东芝株式会社 | Hydraulic activator |
| US8047120B2 (en) | 2005-02-10 | 2011-11-01 | Komatsu Ltd. | Hydraulic piston pump with a balance valve |
| CN100454467C (en) * | 2005-10-18 | 2009-01-21 | 王光顺 | Extra-high-voltage breaker permanent-magnet locked hydraulic operating mechanism |
| CN103615587A (en) * | 2013-11-04 | 2014-03-05 | 国家电网公司 | Air-pressure-type switch triggering device |
| CN104217891A (en) * | 2014-09-11 | 2014-12-17 | 南车株洲电力机车有限公司 | Driving mechanism for vertical type vacuum circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4249281B2 (en) | 2009-04-02 |
| JPH11242925A (en) | 1999-09-07 |
| CN1110828C (en) | 2003-06-04 |
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